Ventilating apparatus.



L. S. HACKNEY.

VENTILATING APPARATUS. APPLICATION FILED ocT. 24,` I9II.

I pSS'Y., Patented May 4, 1915.

I wrrnn STATES PATENT OFFICE.

LESLIE S. HAGKNEY, 0F ST. PAUL, MINNESOTA.

VENTILATING APPARATUS.

Specification of Letters Patent.

Patented May 4, 1915.

Applicaton'led October 24, 1911. Serial No. 656,531.

. To all lwhom t may concern Be it known that I, LnsLna'S. HACKNY, of St. Paul, Ramsey county, Minnesota, have invented certain new and useful Improve ments in` Ventilating Apparatus, of which the following is a specification.

My invention relates to Ventilating apparatus by means of which fresh, pure air is introduced and the foull air removed at or near the ceiling of the room to be ventilated.

It is well known that the temperature of a room at the ceiling is always higher than at the lioor, and admitting cool air well up from the breathing line and causing it to move in a downward course, it vwill-be thoroughly warmed by the ascending cur-` rents of heated air from radiators, stoves or 1 ume of foul or vitiated air and at the same time malntalnlng a balance or ratio which' -will insure anample supply of fresh air at the breathing line in all parts of the ro^om and without creating a draft.

With this end in view my invention consists generally in various constructions and combinations, all as hereinafter described and particularly'pointed` out in the claims.

In the accompanying drawings forming part of this specification, Figure 1 is a perspective `view illustrating the application of my invention to a room to be heated. Fig.

2 is aklctal sectional view illustrating the means for spraying or distributing the incoming air currents as they pass downwardly into the room from the intake trunks.

In the drawing, 2 represents the floor of the roomto be ventilated, 3 the ceiling, 4' the air intake trunks connected through the .fan 5. with the air intake -pipe 6, and ,7 is

` the foul air exhaust trunk communicating through the fan 8 with the exhaust pipe 9. These fans are operated by suitable means, such as the motor 10 disposed between them and having its shaft extending on each side for connection with the fans. This motor and the fans may be located at any suitable point in thebasement or in the wallof the building or wherever it may be found ninost convenient for connection with the ventilating pipes and where it can be easily reached for examination. The intake airtrunks 4, of which l have preferably shown two, one on each sideof the room, though a greater or lessnumber may be provided, as occasion' L requlres, have a series of openings 11 in their bottom walls, with`iaring, depending collars 12 secured to the wall of the trunk above said openings. currents are When, therefore, the airy forcedinto the trunks 4 they will flow downwardly toward the breathing line of the room, meeting the warm air currents ascending from the radiators, stoves or registers. rlhe outlet ror exhaust trunk 7 is equipped with a similar series of'collars through which the warm air ascending to the ceiling of the room will be drawn into the trunk 7 and through the fan 8 to the exhaust 9. rlhe numberof openings'in the trunk will depend, of course, upon the size ofthe room and the amount of air that the person installing, the system deems it necesy sary to remove 1n order to effect a thorough ventilation of the apartment. I do not, therefore, confine myself to the number or size of these exit openings or to the area of the trunk with which they communicate. The air forced into the trunks 4 and discharged downwardly into the room will be allowed in practice during warm weather Ato v iow down vertically into the room and\pass through the ascending currents of.. vitiated alr.-

j he inlet and l exhaust trunksv extend throughout the space to be ventilated, in

or near the ceillng, anda series of openings, preferably comparatively small, lead from theinlet trunk into the room-and allow the delivery of cool, fresh air at all .points simultaneously and insure the-even distribution of the fresh air without causing a draft upon Athe occupants of the room. j The foul'or vitiated airis removed `in a similar manner `through a number of exhaust open1ngs,-also comparatively small, preferably, and j communicating with the exhaust trunk, the purpose being toy draw out the foul air simul' taneously from diferentparts of the room and provide a circulation of pure, warm air from one end of the room to the other. Evidently, by admitting the fresh air through a series of openingsit is not necessary to-provide such a-strong intake current at any one point and Iam able to not only effect amore even distribution of the fresh air inthe room, but avoid the annoyance of having a strong blast of cold air flowing in at one point and an equally/strong blast of foul air flowing outwardly at another point, as usually happens in ventilating systems in general use. The seriesv of inlet openings .will keep every part of the 'room supplied simultaneously'with cool, fresh air, and the 'series of exhaust -openin s will remove the foul air at 'all pointsan every part of the room will beof substantialy uniform temmost distant point from the fresh air intake openings will be supplied with substantially the same-amount of Aair/.suitable for. breathing purposes as the'person near the ventilat- 'mg trunk. The intakel and exhaust openings bemg'vgenerallyflocated in the upper part of the room, the cold air flowing in and settling will reach the breathing zone at al suitable temperature Aand a lcorresponding,

volume of foul air,` will be drawn out through that is slidable in a the intaketrunkst the exhaust openings. l The proper ratioimay be easily maintained at. all times and the room keptfsuppliedv with fresh pure air and Without creating a. draft atzany oint'. lprefer also to arrange the inlet an exhaust trunks in substantially and thereby avoid the currents of cool or foul air whichusually result from the location of inlet openings near the floor line on one side of the room and the exhaust openings in a corresponding posi tion on the opposite side of the room, or, even where the fresh airinlets 4are in the floor ine, the occupants o f 'the ro'oin will be subjected to the annoyance of currents' perature and the'same degree of purity of.- a1r,and the occupant ofthe room at the the same relative' po'-v sition with respect to the walls ofthe room j objectionable cross and the exhaust opening near the' asses downwardlyy from 'This device consists'in al vand down to increase or decrease the size of the exit opening, and, as indicated in dotted lines, may be revolved toa position from beneath' the exit opening where it willallow the air'currents to flow'directly down into the room, l

I do not wish to be confined to this application .to the details of construction herein shown and described, as they may be Inod-n ied in various ways and still be within the scope of my invention.

l claim as my invention l. A Ventilating apparatus comprising air inlet and exhaust trunks mounted in or near the ceiling of theroom` to be ventilated, in substantially parallel relation, each trunk having a series of openings arranged at in# tervals and communicating with said room substantially from wall to wall thereof, said inletv openings being arranged to deliver ina downwardly direction each a substantially equal .volume of cool air, said outlet openings being arranged each to withdraw asubstantially equal volume of vitiated air from the space .to be ventilated, and means for crea-ting forced circulation through said inlet and outlet openingsto maintain a circulation of fresh air substantially downwardly from the inlets to the breathing zone and-of vitiated air upwardly to the outlets; v 2. A Ventilating apparatus comprising all' inlet'and exhaust trunks mounted in or near the ceiling of the room to'be ventilated, 1n

substantially parallel relation, each trunk having a series of openings arranged at intervals and communicating with said `room substantially from wall to wall thereof, said inlet openings being arranged to deliver in Y a downwardly direction each a substantially equal volume of cool air, said outlet open# 'ingsbeing arranged each to withdraw a substantially equalvolume of vitiated air from the space to be ventilated, a fan connected tothe inlet air trunks for forcing air to said 1 -et openingsand afan connected to said 'exhaust trunks 'for 'withdrawing air from the outlet openings to maintain 'a circulation? of fresh air downwa rdly froln'the inlets to the breathing zone.' and 'of vitiated air upwardly to the outlets. 1' y 3., A Ventilating apparatus comprising air inlet and exhaust, trunks substantially parallel relation, each, trunk having a series of openings arranged at intervals and communicating with said ,room substantially vfrom wall to wall thereof, said inlet openings beingarranged to deliver in a downwardly'direction each asubstantially equal .volumeof cool air, said outlet openings being 4arranged each to withdraw a 'substantiall v'equal volume of vitiated air from inlet openingsl beingprovided withde'vi'ces to assist mounted in or near the ceiling ofjthe`room to be ventilated, in

in guiding the incoming air downwardly, In witness whereof, I have hereunto set alrlid means or freatirg forced circulation my hand this 18 day of October, 1911. t rou h sai inet an out etno enn s to maintgain a circulation of fresh aii" subgstan- LESLIE s' HACKNEY 5 tially downwardly from the inlet to the Witnesses: breathing zone and 'of vitiated air upwardly ASHLEY COFFMAN to the outlets. LOU-1s JOHNSON. 

